1. Resident of Saudi Board of Family Medicine, Northern Borders General Health Affairs, Arar, Saudi Arabia
2. Family Medicine, King Abdul-Aziz Medical City, National Guard Heath Affairs, Riyadh, Saudi Arabia
3. Public Health and Community Medicine, Faculty of Medicine, Zagazig University, Zagazig, Egypt
4. Public Health & Community Medicine, Northern Borders General Health Affairs, Arar, Saudi Arabia
5. Public Health and Community Medicine, Faculty of Medicine, Mansoura University, Mansoura, Egypt
6. Family Medicine, Northern Borders General Health Affairs, Arar, Saudi Arabia